Utilities for reading from Apple II disks.
Clone or download
mikeakohn Update README.md
Updating README with some information on how to use these programs.
Latest commit 66a9653 Oct 23, 2016



Utilities for reading from Apple II disks.

August 23, 2015: I was playing around with an Apple IIgs emulator today with the hopes of writing some code with naken_asm (and eventually maybe Java Grinder) for Apple IIgs. Using this project and a small piece of code I didn't check in yet, I was able to update the HELLO program on some Apple IIe .dsk image I downloaded and got my 20 byte program running.

I used Google Go (GoLang) for this project just for the heck of it. Trying to learn something new.

The programs included here are:


Read an Apple II disk file and dump disk info, the free sector bitmap, and the "catalog" of files on the disk.


go run read_dos33_disk.go apple_iigs_java_demo.dsk


Read an Apple II disk and dump the given 255 byte track / sector.


go run read_dos33_sector.go apple_iigs_java_demo.dsk 0 12


Create a new formatted Apple II disk image and write the specified program to autorun at boot time.


go run init_dos33_disk.go apple_iigs_java_demo.dsk dos33.img apple_iigs_java_demo.bin

Note: The dos33.img is the first 8448 of any bootable disk image. I didn't include one in this repository since I didn't know if it was copyrighted. It's possible that the image doesn't need to be this big, but for whatever reason when I wrote this program I used 8448 bytes of a working disk.